Babylon.js/materialsLibrary/materials/pbr/pbr.fragment.fx

#ifdef BUMP
#extension GL_OES_standard_derivatives : enable
#endif

#ifdef LODBASEDMICROSFURACE
#extension GL_EXT_shader_texture_lod : enable
#endif

#ifdef LOGARITHMICDEPTH
#extension GL_EXT_frag_depth : enable
#endif

precision highp float;

uniform vec3 vEyePosition;
uniform vec3 vAmbientColor;
uniform vec3 vReflectionColor;
uniform vec4 vAlbedoColor;
uniform vec4 vLightRadiuses;

// CUSTOM CONTROLS
uniform vec4 vLightingIntensity;
uniform vec4 vCameraInfos;

#ifdef OVERLOADEDVALUES
    uniform vec4 vOverloadedIntensity;
    uniform vec3 vOverloadedAmbient;
    uniform vec3 vOverloadedAlbedo;
    uniform vec3 vOverloadedReflectivity;
    uniform vec3 vOverloadedEmissive;
    uniform vec3 vOverloadedReflection;
    uniform vec3 vOverloadedMicroSurface;
#endif

#ifdef OVERLOADEDSHADOWVALUES
    uniform vec4 vOverloadedShadowIntensity;
#endif

#if defined(REFLECTION) || defined(REFRACTION)
    uniform vec2 vMicrosurfaceTextureLods;
#endif

uniform vec4 vReflectivityColor;
uniform vec3 vEmissiveColor;

// Input
varying vec3 vPositionW;

#ifdef NORMAL
varying vec3 vNormalW;
#endif

#ifdef VERTEXCOLOR
varying vec4 vColor;
#endif

// Lights
#include<lightFragmentDeclaration>[0]
#include<lightFragmentDeclaration>[1]
#include<lightFragmentDeclaration>[2]
#include<lightFragmentDeclaration>[3]

// Samplers
#ifdef ALBEDO
varying vec2 vAlbedoUV;
uniform sampler2D albedoSampler;
uniform vec2 vAlbedoInfos;
#endif

#ifdef AMBIENT
varying vec2 vAmbientUV;
uniform sampler2D ambientSampler;
uniform vec2 vAmbientInfos;
#endif

#ifdef OPACITY	
varying vec2 vOpacityUV;
uniform sampler2D opacitySampler;
uniform vec2 vOpacityInfos;
#endif

#ifdef EMISSIVE
varying vec2 vEmissiveUV;
uniform vec2 vEmissiveInfos;
uniform sampler2D emissiveSampler;
#endif

#ifdef LIGHTMAP
varying vec2 vLightmapUV;
uniform vec2 vLightmapInfos;
uniform sampler2D lightmapSampler;
#endif

#if defined(REFLECTIVITY)
varying vec2 vReflectivityUV;
uniform vec2 vReflectivityInfos;
uniform sampler2D reflectivitySampler;
#endif

// Fresnel
#include<fresnelFunction>

#ifdef OPACITYFRESNEL
uniform vec4 opacityParts;
#endif

#ifdef EMISSIVEFRESNEL
uniform vec4 emissiveLeftColor;
uniform vec4 emissiveRightColor;
#endif

// Refraction Reflection
#if defined(REFLECTIONMAP_SPHERICAL) || defined(REFLECTIONMAP_PROJECTION) || defined(REFRACTION)
    uniform mat4 view;
#endif

// Refraction
#ifdef REFRACTION
    uniform vec4 vRefractionInfos;

    #ifdef REFRACTIONMAP_3D
        uniform samplerCube refractionCubeSampler;
    #else
        uniform sampler2D refraction2DSampler;
        uniform mat4 refractionMatrix;
    #endif
#endif

// Reflection
#ifdef REFLECTION
uniform vec2 vReflectionInfos;

#ifdef REFLECTIONMAP_3D
uniform samplerCube reflectionCubeSampler;
#else
uniform sampler2D reflection2DSampler;
#endif

#ifdef REFLECTIONMAP_SKYBOX
varying vec3 vPositionUVW;
#else
    #ifdef REFLECTIONMAP_EQUIRECTANGULAR_FIXED
    varying vec3 vDirectionW;
    #endif

    #if defined(REFLECTIONMAP_PLANAR) || defined(REFLECTIONMAP_CUBIC) || defined(REFLECTIONMAP_PROJECTION)
    uniform mat4 reflectionMatrix;
    #endif
#endif

#include<reflectionFunction>

#endif

// PBR
#include<pbrShadowFunctions>
#include<pbrFunctions>
#include<harmonicsFunctions>
#include<pbrLightFunctions>

#include<bumpFragmentFunctions>
#include<clipPlaneFragmentDeclaration>
#include<logDepthDeclaration>

// Fog
#include<fogFragmentDeclaration>

void main(void) {
#include<clipPlaneFragment>

    vec3 viewDirectionW = normalize(vEyePosition - vPositionW);

    // Albedo
    vec4 surfaceAlbedo = vec4(1., 1., 1., 1.);
    vec3 surfaceAlbedoContribution = vAlbedoColor.rgb;
    
    // Alpha
    float alpha = vAlbedoColor.a;

    #ifdef ALBEDO
        surfaceAlbedo = texture2D(albedoSampler, vAlbedoUV);
        surfaceAlbedo = vec4(toLinearSpace(surfaceAlbedo.rgb), surfaceAlbedo.a);

        #ifndef LINKREFRACTIONTOTRANSPARENCY
            #ifdef ALPHATEST
                if (surfaceAlbedo.a < 0.4)
                    discard;
            #endif
        #endif

        #ifdef ALPHAFROMALBEDO
            alpha *= surfaceAlbedo.a;
        #endif

        surfaceAlbedo.rgb *= vAlbedoInfos.y;
    #else
        // No Albedo texture.
        surfaceAlbedo.rgb = surfaceAlbedoContribution;
        surfaceAlbedoContribution = vec3(1., 1., 1.);
    #endif

    #ifdef VERTEXCOLOR
        surfaceAlbedo.rgb *= vColor.rgb;
    #endif

    #ifdef OVERLOADEDVALUES
        surfaceAlbedo.rgb = mix(surfaceAlbedo.rgb, vOverloadedAlbedo, vOverloadedIntensity.y);
    #endif

    // Bump
    #ifdef NORMAL
        vec3 normalW = normalize(vNormalW);
    #else
        vec3 normalW = vec3(1.0, 1.0, 1.0);
    #endif
    
    #include<bumpFragment>

    // Ambient color
    vec3 ambientColor = vec3(1., 1., 1.);

    #ifdef AMBIENT
        ambientColor = texture2D(ambientSampler, vAmbientUV).rgb * vAmbientInfos.y;
        
        #ifdef OVERLOADEDVALUES
            ambientColor.rgb = mix(ambientColor.rgb, vOverloadedAmbient, vOverloadedIntensity.x);
        #endif
    #endif

    // Reflectivity map
    float microSurface = vReflectivityColor.a;
    vec3 surfaceReflectivityColor = vReflectivityColor.rgb;
    
    #ifdef OVERLOADEDVALUES
        surfaceReflectivityColor.rgb = mix(surfaceReflectivityColor.rgb, vOverloadedReflectivity, vOverloadedIntensity.z);
    #endif

    #ifdef REFLECTIVITY
        vec4 surfaceReflectivityColorMap = texture2D(reflectivitySampler, vReflectivityUV);
        surfaceReflectivityColor = surfaceReflectivityColorMap.rgb;
        surfaceReflectivityColor = toLinearSpace(surfaceReflectivityColor);

        #ifdef OVERLOADEDVALUES
            surfaceReflectivityColor = mix(surfaceReflectivityColor, vOverloadedReflectivity, vOverloadedIntensity.z);
        #endif

        #ifdef MICROSURFACEFROMREFLECTIVITYMAP
            microSurface = surfaceReflectivityColorMap.a;
        #else
            #ifdef MICROSURFACEAUTOMATIC
                microSurface = computeDefaultMicroSurface(microSurface, surfaceReflectivityColor);
            #endif
        #endif
    #endif

    #ifdef OVERLOADEDVALUES
        microSurface = mix(microSurface, vOverloadedMicroSurface.x, vOverloadedMicroSurface.y);
    #endif

    // Compute N dot V.
    float NdotV = max(0.00000000001, dot(normalW, viewDirectionW));

    // Adapt microSurface.
    microSurface = clamp(microSurface, 0., 1.) * 0.98;

    // Compute roughness.
    float roughness = clamp(1. - microSurface, 0.000001, 1.0);
    
    // Lighting
    vec3 lightDiffuseContribution = vec3(0., 0., 0.);
    
#ifdef OVERLOADEDSHADOWVALUES
    vec3 shadowedOnlyLightDiffuseContribution = vec3(1., 1., 1.);
#endif

#ifdef SPECULARTERM
    vec3 lightSpecularContribution= vec3(0., 0., 0.);
#endif
    float notShadowLevel = 1.; // 1 - shadowLevel
    float NdotL = -1.;
    lightingInfo info;

#include<pbrLightFunctionsCall>[0]
#include<pbrLightFunctionsCall>[1]
#include<pbrLightFunctionsCall>[2]
#include<pbrLightFunctionsCall>[3]

#ifdef SPECULARTERM
    lightSpecularContribution *= vLightingIntensity.w;
#endif

#ifdef OPACITY
    vec4 opacityMap = texture2D(opacitySampler, vOpacityUV);

    #ifdef OPACITYRGB
        opacityMap.rgb = opacityMap.rgb * vec3(0.3, 0.59, 0.11);
        alpha *= (opacityMap.x + opacityMap.y + opacityMap.z)* vOpacityInfos.y;
    #else
        alpha *= opacityMap.a * vOpacityInfos.y;
    #endif

#endif

#ifdef VERTEXALPHA
    alpha *= vColor.a;
#endif

#ifdef OPACITYFRESNEL
    float opacityFresnelTerm = computeFresnelTerm(viewDirectionW, normalW, opacityParts.z, opacityParts.w);

    alpha += opacityParts.x * (1.0 - opacityFresnelTerm) + opacityFresnelTerm * opacityParts.y;
#endif

// Refraction
vec3 surfaceRefractionColor = vec3(0., 0., 0.);

// Go mat -> blurry reflexion according to microSurface
#ifdef LODBASEDMICROSFURACE
    float alphaG = convertRoughnessToAverageSlope(roughness);
#endif
        
#ifdef REFRACTION
	vec3 refractionVector = refract(-viewDirectionW, normalW, vRefractionInfos.y);
    
    #ifdef LODBASEDMICROSFURACE
        #ifdef USEPMREMREFRACTION
            float lodRefraction = getMipMapIndexFromAverageSlopeWithPMREM(vMicrosurfaceTextureLods.y, alphaG);
        #else
            float lodRefraction = getMipMapIndexFromAverageSlope(vMicrosurfaceTextureLods.y, alphaG);
        #endif
    #else
        float biasRefraction = (vMicrosurfaceTextureLods.y + 2.) * (1.0 - microSurface);
    #endif
    
    #ifdef REFRACTIONMAP_3D
        refractionVector.y = refractionVector.y * vRefractionInfos.w;

        if (dot(refractionVector, viewDirectionW) < 1.0)
        {
            #ifdef LODBASEDMICROSFURACE
                #ifdef USEPMREMREFRACTION
                    // Empiric Threshold
                    if (microSurface > 0.5)
                    {
                        // Bend to not reach edges.
                        float scaleRefraction = 1. - exp2(lodRefraction) / exp2(vMicrosurfaceTextureLods.y); // CubemapSize is the size of the base mipmap
                        float maxRefraction = max(max(abs(refractionVector.x), abs(refractionVector.y)), abs(refractionVector.z));
                        if (abs(refractionVector.x) != maxRefraction) refractionVector.x *= scaleRefraction;
                        if (abs(refractionVector.y) != maxRefraction) refractionVector.y *= scaleRefraction;
                        if (abs(refractionVector.z) != maxRefraction) refractionVector.z *= scaleRefraction;
                    }
                #endif
                
                surfaceRefractionColor = textureCubeLodEXT(refractionCubeSampler, refractionVector, lodRefraction).rgb * vRefractionInfos.x;
            #else
                surfaceRefractionColor = textureCube(refractionCubeSampler, refractionVector, biasRefraction).rgb * vRefractionInfos.x;
            #endif
        }
        
        #ifndef REFRACTIONMAPINLINEARSPACE
            surfaceRefractionColor = toLinearSpace(surfaceRefractionColor.rgb); 
        #endif
    #else
        vec3 vRefractionUVW = vec3(refractionMatrix * (view * vec4(vPositionW + refractionVector * vRefractionInfos.z, 1.0)));

        vec2 refractionCoords = vRefractionUVW.xy / vRefractionUVW.z;

        refractionCoords.y = 1.0 - refractionCoords.y;

        #ifdef LODBASEDMICROSFURACE
            surfaceRefractionColor = texture2DLodEXT(refraction2DSampler, refractionCoords, lodRefraction).rgb * vRefractionInfos.x;
        #else
            surfaceRefractionColor = texture2D(refraction2DSampler, refractionCoords, biasRefraction).rgb * vRefractionInfos.x;
        #endif    
        
        surfaceRefractionColor = toLinearSpace(surfaceRefractionColor.rgb); 
    #endif
#endif

// Reflection
vec3 environmentRadiance = vReflectionColor.rgb;
vec3 environmentIrradiance = vReflectionColor.rgb;

#ifdef REFLECTION
    vec3 vReflectionUVW = computeReflectionCoords(vec4(vPositionW, 1.0), normalW);

    #ifdef LODBASEDMICROSFURACE
        #ifdef USEPMREMREFLECTION
            float lodReflection = getMipMapIndexFromAverageSlopeWithPMREM(vMicrosurfaceTextureLods.x, alphaG);
        #else
            float lodReflection = getMipMapIndexFromAverageSlope(vMicrosurfaceTextureLods.x, alphaG);
        #endif
    #else
        float biasReflection = (vMicrosurfaceTextureLods.x + 2.) * (1.0 - microSurface);
    #endif
    
    #ifdef REFLECTIONMAP_3D
        
        #ifdef LODBASEDMICROSFURACE
            #ifdef USEPMREMREFLECTION
                // Empiric Threshold
                if (microSurface > 0.5)
                {
                    // Bend to not reach edges.
                    float scaleReflection = 1. - exp2(lodReflection) / exp2(vMicrosurfaceTextureLods.x); // CubemapSize is the size of the base mipmap
                    float maxReflection = max(max(abs(vReflectionUVW.x), abs(vReflectionUVW.y)), abs(vReflectionUVW.z));
                    if (abs(vReflectionUVW.x) != maxReflection) vReflectionUVW.x *= scaleReflection;
                    if (abs(vReflectionUVW.y) != maxReflection) vReflectionUVW.y *= scaleReflection;
                    if (abs(vReflectionUVW.z) != maxReflection) vReflectionUVW.z *= scaleReflection;
                }
            #endif
                
            environmentRadiance = textureCubeLodEXT(reflectionCubeSampler, vReflectionUVW, lodReflection).rgb * vReflectionInfos.x;
        #else
            environmentRadiance = textureCube(reflectionCubeSampler, vReflectionUVW, biasReflection).rgb * vReflectionInfos.x;
        #endif

        #ifdef USESPHERICALFROMREFLECTIONMAP
            #ifndef REFLECTIONMAP_SKYBOX
                vec3 normalEnvironmentSpace = (reflectionMatrix * vec4(normalW, 1)).xyz;
                environmentIrradiance = EnvironmentIrradiance(normalEnvironmentSpace);
            #endif
        #else
            environmentRadiance = toLinearSpace(environmentRadiance.rgb);
            
            environmentIrradiance = textureCube(reflectionCubeSampler, normalW, 20.).rgb * vReflectionInfos.x;
            environmentIrradiance = toLinearSpace(environmentIrradiance.rgb);
            environmentIrradiance *= 0.2; // Hack in case of no hdr cube map use for environment.
        #endif
    #else
        vec2 coords = vReflectionUVW.xy;

        #ifdef REFLECTIONMAP_PROJECTION
            coords /= vReflectionUVW.z;
        #endif

        coords.y = 1.0 - coords.y;
        #ifdef LODBASEDMICROSFURACE
            environmentRadiance = texture2DLodEXT(reflection2DSampler, coords, lodReflection).rgb * vReflectionInfos.x;
        #else
            environmentRadiance = texture2D(reflection2DSampler, coords, biasReflection).rgb * vReflectionInfos.x;
        #endif
    
        environmentRadiance = toLinearSpace(environmentRadiance.rgb);

        environmentIrradiance = texture2D(reflection2DSampler, coords, 20.).rgb * vReflectionInfos.x;
        environmentIrradiance = toLinearSpace(environmentIrradiance.rgb);
    #endif
#endif

#ifdef OVERLOADEDVALUES
    environmentIrradiance = mix(environmentIrradiance, vOverloadedReflection, vOverloadedMicroSurface.z);
    environmentRadiance = mix(environmentRadiance, vOverloadedReflection, vOverloadedMicroSurface.z);
#endif

environmentRadiance *= vLightingIntensity.z;
environmentIrradiance *= vLightingIntensity.z;

// Compute reflection specular fresnel
vec3 specularEnvironmentR0 = surfaceReflectivityColor.rgb;
vec3 specularEnvironmentR90 = vec3(1.0, 1.0, 1.0);
vec3 specularEnvironmentReflectance = FresnelSchlickEnvironmentGGX(clamp(NdotV, 0., 1.), specularEnvironmentR0, specularEnvironmentR90, sqrt(microSurface));

// Compute refractance
vec3 refractance = vec3(0.0 , 0.0, 0.0);
#ifdef REFRACTION
    vec3 transmission = vec3(1.0 , 1.0, 1.0);
    #ifdef LINKREFRACTIONTOTRANSPARENCY
        // Transmission based on alpha.
        transmission *= (1.0 - alpha);
        
        // Tint the material with albedo.
        // TODO. PBR Tinting.
        vec3 mixedAlbedo = surfaceAlbedoContribution.rgb * surfaceAlbedo.rgb;
        float maxChannel = max(max(mixedAlbedo.r, mixedAlbedo.g), mixedAlbedo.b);
        vec3 tint = clamp(maxChannel * mixedAlbedo, 0.0, 1.0);
        
        // Decrease Albedo Contribution
        surfaceAlbedoContribution *= alpha;
        
        // Decrease irradiance Contribution
        environmentIrradiance *= alpha;
        
        // Tint reflectance
        surfaceRefractionColor *= tint;
        
        // Put alpha back to 1;
        alpha = 1.0;
    #endif
    
    // Add Multiple internal bounces.
    vec3 bounceSpecularEnvironmentReflectance = (2.0 * specularEnvironmentReflectance) / (1.0 + specularEnvironmentReflectance);
    specularEnvironmentReflectance = mix(bounceSpecularEnvironmentReflectance, specularEnvironmentReflectance, alpha);
    
    // In theory T = 1 - R.
    transmission *= 1.0 - specularEnvironmentReflectance;
    
    // Should baked in diffuse.
    refractance = surfaceRefractionColor * transmission;
#endif

// Apply Energy Conservation taking in account the environment level only if the environment is present.
float reflectance = max(max(surfaceReflectivityColor.r, surfaceReflectivityColor.g), surfaceReflectivityColor.b);
surfaceAlbedo.rgb = (1. - reflectance) * surfaceAlbedo.rgb;

refractance *= vLightingIntensity.z;
environmentRadiance *= specularEnvironmentReflectance;

// Emissive
vec3 surfaceEmissiveColor = vEmissiveColor;
#ifdef EMISSIVE
    vec3 emissiveColorTex = texture2D(emissiveSampler, vEmissiveUV).rgb;
    surfaceEmissiveColor = toLinearSpace(emissiveColorTex.rgb) * surfaceEmissiveColor * vEmissiveInfos.y;
#endif

#ifdef OVERLOADEDVALUES
    surfaceEmissiveColor = mix(surfaceEmissiveColor, vOverloadedEmissive, vOverloadedIntensity.w);
#endif

#ifdef EMISSIVEFRESNEL
    float emissiveFresnelTerm = computeFresnelTerm(viewDirectionW, normalW, emissiveRightColor.a, emissiveLeftColor.a);

    surfaceEmissiveColor *= emissiveLeftColor.rgb * (1.0 - emissiveFresnelTerm) + emissiveFresnelTerm * emissiveRightColor.rgb;
#endif

// Composition
#ifdef EMISSIVEASILLUMINATION
    vec3 finalDiffuse = max(lightDiffuseContribution * surfaceAlbedoContribution + vAmbientColor, 0.0) * surfaceAlbedo.rgb;
    
    #ifdef OVERLOADEDSHADOWVALUES
        shadowedOnlyLightDiffuseContribution = max(shadowedOnlyLightDiffuseContribution * surfaceAlbedoContribution + vAmbientColor, 0.0) * surfaceAlbedo.rgb;
    #endif
#else
    #ifdef LINKEMISSIVEWITHALBEDO
        vec3 finalDiffuse = max((lightDiffuseContribution + surfaceEmissiveColor) * surfaceAlbedoContribution + vAmbientColor, 0.0) * surfaceAlbedo.rgb;

        #ifdef OVERLOADEDSHADOWVALUES
            shadowedOnlyLightDiffuseContribution = max((shadowedOnlyLightDiffuseContribution + surfaceEmissiveColor) * surfaceAlbedoContribution + vAmbientColor, 0.0) * surfaceAlbedo.rgb;
        #endif
    #else
        vec3 finalDiffuse = max(lightDiffuseContribution * surfaceAlbedoContribution + surfaceEmissiveColor + vAmbientColor, 0.0) * surfaceAlbedo.rgb;

        #ifdef OVERLOADEDSHADOWVALUES
            shadowedOnlyLightDiffuseContribution = max(shadowedOnlyLightDiffuseContribution * surfaceAlbedoContribution + surfaceEmissiveColor + vAmbientColor, 0.0) * surfaceAlbedo.rgb;
        #endif
    #endif
#endif

#ifdef OVERLOADEDSHADOWVALUES
    finalDiffuse = mix(finalDiffuse, shadowedOnlyLightDiffuseContribution, (1.0 - vOverloadedShadowIntensity.y));
#endif

#ifdef SPECULARTERM
    vec3 finalSpecular = lightSpecularContribution * surfaceReflectivityColor;
#else
    vec3 finalSpecular = vec3(0.0);
#endif

#ifdef SPECULAROVERALPHA
    alpha = clamp(alpha + getLuminance(finalSpecular), 0., 1.);
#endif

#ifdef RADIANCEOVERALPHA
    alpha = clamp(alpha + getLuminance(environmentRadiance), 0., 1.);
#endif

// Composition
// Reflection already includes the environment intensity.
#ifdef EMISSIVEASILLUMINATION
    vec4 finalColor = vec4(finalDiffuse * ambientColor * vLightingIntensity.x + surfaceAlbedo.rgb * environmentIrradiance + finalSpecular * vLightingIntensity.x + environmentRadiance + surfaceEmissiveColor * vLightingIntensity.y + refractance, alpha);
#else
    vec4 finalColor = vec4(finalDiffuse * ambientColor * vLightingIntensity.x + surfaceAlbedo.rgb * environmentIrradiance + finalSpecular * vLightingIntensity.x + environmentRadiance + refractance, alpha);
#endif

#ifdef LIGHTMAP
    vec3 lightmapColor = texture2D(lightmapSampler, vLightmapUV).rgb * vLightmapInfos.y;

    #ifdef USELIGHTMAPASSHADOWMAP
        finalColor.rgb *= lightmapColor;
    #else
        finalColor.rgb += lightmapColor;
    #endif
#endif

    finalColor = max(finalColor, 0.0);

#ifdef CAMERATONEMAP
    finalColor.rgb = toneMaps(finalColor.rgb);
#endif

    finalColor.rgb = toGammaSpace(finalColor.rgb);

#ifdef CAMERACONTRAST
    finalColor = contrasts(finalColor);
#endif

    // Normal Display.
    // gl_FragColor = vec4(normalW * 0.5 + 0.5, 1.0);

    // Ambient reflection color.
    // gl_FragColor = vec4(ambientReflectionColor, 1.0);

    // Reflection color.
    // gl_FragColor = vec4(reflectionColor, 1.0);

    // Base color.
    // gl_FragColor = vec4(surfaceAlbedo.rgb, 1.0);

    // Specular color.
    // gl_FragColor = vec4(surfaceReflectivityColor.rgb, 1.0);

    // MicroSurface color.
    // gl_FragColor = vec4(microSurface, microSurface, microSurface, 1.0);

    // Specular Map
    // gl_FragColor = vec4(reflectivityMapColor.rgb, 1.0);
    
    // Refractance
    // gl_FragColor = vec4(refractance.rgb, 1.0);

    //// Emissive Color
    //vec2 test = vEmissiveUV * 0.5 + 0.5;
    //gl_FragColor = vec4(test.x, test.y, 1.0, 1.0);

#include<logDepthFragment>
#include<fogFragment>(color, finalColor)

    gl_FragColor = finalColor;
}